Changing to 12/12, lower big leaf spots. Can anyone give me some advice.

SO HERE ARE THE PICTURES OF BOTH MY BABYS. THEY ARE IN TO 12/12 FOR ABOUT 10 DAYS ALREADY AND A FEW OF THE BIG LOWER LEAVES ARE GETTING BROWN ON THE TIPS. PH LEVEL IS FINE BUT I HAVE MY TEMPS AT 85 -88 AND HIT 89. IS THIS THE CAUSE?


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Looks like heat stress. Just to clear things up, what nutes do you use and how often? Other than that, your plants look wonderful.

i use fox farm grow big, tiger and bloom. at this time i am only feeding it a little bit of tiger and bloom for another week then give them all 3 again till harvest. its a bitch when its hot out.